The situation mentioned by the patient is still relatively common, adolescent males often find hard lumps in the chest, mostly due to abnormal development of the male breast clinical manifestations, when such a situation occurs, you need to go to the hospital in a timely manner to carry out a localized ultrasound examination. If it is determined that it is due to breast tissue, the patient should contact the breast surgeon as soon as possible for diagnosis and treatment, often requiring surgical treatment, in the occurrence of similar situations, ultrasound examination is necessary, in addition to breast hyperplasia other localized subcutaneous masses can cause similar situations, such as localized lipoma, localized sebaceous cysts, or fat necrosis of the situation. These cases often require surgery, so in such cases, the necessary tests, especially ultrasound, are necessary.